The "Histoire de Montlhéry" refers to the historical account of the town of Montlhéry, located in the Essonne department of France. This town is known for its medieval heritage, particularly the Montlhéry Castle, which dates back to the 10th century. The castle played a significant role in the region's defense and politics during the Middle Ages. Montlhéry has a rich history that includes its involvement in various conflicts and its strategic importance due to its location. The town's historical significance is also reflected in its architecture and the remnants of its past, making it a point of interest for historians and visitors alike.